Ninja's are capable and formidable fighters when faced on common ground, however they have learned that head-on fights are not always the way. Ninjas do not rely on stealth but they can utilize it better than many other fighters can, and it can sometimes give them an unexpected advantage. 

Level 3: Ninja Throw

Ninjas can choose to use their bonus action to throw a weapon as part of an attack action.

The thrown weapon must include the "thrown" AND "light" OR "finesse" properties.

You cannot be wielding 2 weapons when you use this. You also do not suffer disadvantage for using this attack in melee.

Level 3: Weak Spot

Whenever you have advantage against a target you can use 1 action to target a weak spot on your enemy and score a critical hit with a melee weapon.

You can choose to expend a bonus action to study your opponents movements to grant yourself advantage for the weak spot attack if you do not have advantage.

You cannot use this if you are at disadvantage against your target.

You can use this feat an equal number of times to your proficiency bonus per long rest. 

Level 3: Armor Restriction

The path of a Ninja is one of speed and silence. When you choose this path you no longer have proficiency in Heavy Armor, and you cannot regain it using additional feats or multiclassing in the future. 

Level 3: Living Shadow

You have learned the ways of stealth in combat, you gain proficiency in stealth, expertise if you were already proficient. 

Level 7: Reflex Dodge

A Ninja can use their reaction to dodge an incoming attack, adding their proficiency bonus to their armor class against an incoming attack(s) from one chosen enemy until the end of that creatures turn. 

Level 10: Pocket Sand

As long as you have sand, dirt, salt, or any other small granular object (DM Discretion) in a pouch on your person, you can use a bonus action to toss it into your opponents eyes, giving them the "blinded" condition until the beginning of your next turn. 

Target can resist with a Dex saving throw DC (8+proficiency+dex mod) 

You must have a free hand to use this feat. 

Level 15: Improved Reflex Dodge

A Ninja can use their reaction to dodge any incoming attacks, adding their proficiency bonus to their armor class against any incoming attack(s) from any source until the beginning of their next turn.

Level 18: Rushing Shadow

When you use the attack action, you can move between targets up to your current movement speed in combat without triggering opportunity attacks.